Attendant telephone switchboard



FIG. 1 is a front, top and right side perspective view of an attendant telephone switchboard showing our new design in a cradled relationship;

FIG. 2 is a left side, top and front perspective view thereof;

FIG. 3 is a perspective view similar to FIG. 2, with the handset spaced apart from the stand;

FIG. 4 is a right side, rear, and bottom perspective view thereof; and

FIG. 5 is a perspective view corresponding to FIG. 2 with the adjustable-display panel in an alternate position.

The broken line showing of coiled cord in FIGS. 1, 2, 3 and 5 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an attendant telephone switchboard, as shown and described. 